1. Adamson, J.: The Peoples of Kenya. New York 1967.
2. Aguilar, M.: Reinventing Gada: Generational Knowledge in Borana. In: id. (ed.): The Politics of Age and Gerontocracy in Africa. Trenton, N.J. 1998.
3. Almagor, U.: Pastoral Partners: Affinity and Bond Partnership among the Dassanetch of South-West Ethiopia. Manchester 1978.
4. Andrzejewski, B. W.: Some Preliminary Observations on the Borana Dialect of Galla. In: Bulletin of the School of Oriental and African Studies 49 (1957) 354-374.
5. id.: Ideas about Warfare in Borana Galla Stories and Fables. In: African Language Studies 3 (1962) 116-136.